Leetcode—1279. 红绿灯路口【简单】Plus（多线程）
2024每日刷题（186）
Leetcode—1279. 红绿灯路口
C++实现代码
class TrafficLight {
public:
TrafficLight() {
}
void carArrived(
int carId, // ID of the car
int roadId, // ID of the road the car travels on. Can be 1 (road A) or 2 (road B)
int direction, // Direction of the car
function<void()> turnGreen, // Use turnGreen() to turn light to green on current road
function<void()> crossCar // Use crossCar() to make car cross the intersection
) {
lock_guard<std::mutex> loc(mtx);
if(roadId != curRoadId) {
curRoadId = roadId;
turnGreen();
}
crossCar();
}
private:
mutex mtx;
int curRoadId = 1;
};
运行结果
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